If there's one thing that's become a feature of the COVID-19 pandemic, it's that it has seemed to drag on and on.

While it seems like a long time ago, it was only early last year when the SARS-CoV-2 virus popped into our lives.

But how far left have we got to go? If it was a play, what act are we in? And can we take an interval break?

Also on today's show:

* Doherty Institute modelling said we can start opening up at 70 per cent and 80 per cent vaccination rate. This was based on small numbers in the community. What would be the effect of opening with large numbers?

* Since NSW is headed for thousands more cases, could people living there be travelling internationally before everyone else?

* Has anyone caught COVID-19 twice? If so, was it worse the second time?